SU12205A1 - Device for controlling an electromagnetic drive machine - Google Patents

Description

The proposed device aims to control an electromagnetic drive machine with the aid of an arrow of a measuring device, and consists in that this arrow, depending on its position, allows or makes it impossible to close the contacts in the device through which current passes to the controlled machine, the arrow does not participate in the contact closure and the latter does not prevent the arrow from moving freely.

In the drawing of Figs. 1 and 2, the proposed device is schematically depicted in two projections; FIG. 3 and 4 are its modifications also in two projections.

In the device shown in FIG. 1 and 2, plate 3 is attached to arrow 1 of the measuring device 2, located above two stationary pads 4 and 5, having an interval between them, under which horizontal spring contacts 6a-bi are fixed, closing when in contact with stationary contracts 7 -7th circuit of the electric motor 30, which, depending on whether the pair of contacts is closed, will rotate into one or another

the side. Above arrow 1 are pivotal on axis 9, levers 8a and 8 &, each of which is connected to a system of levers 10-12-13, of which the last 13 is held by spring 17 and serves as a lock for electromagnet 15, the winding circuit of which closes or by hand or automatically, at regular intervals. When each of the electromagnets 15 is energized, the corresponding lever 13 is attracted to it, as a result of which the corresponding lever, for example, 8a, is set in motion and lowered. If arrow 1 is just below it at this time, the contacts byb-Ta or 6b-7b cannot close as the plate 3 prevents the lever 8a from falling between the pads 4 and 5. If the arrow 1 does not prevent it from falling then he occupies the position 8, indicated by the dotted line, clamping down on those. the most spring-loaded contacts b - b & to contacts 7a - 7b. The second lever b serving the contacts 6a and 6d acts in exactly the same way. The ba-6d contacts could also be fixed directly at the ends of the levers 8 and 8b, which

included in the intervals of 4, 5, and the principle of operation would remain the same.

The Z and 8 / contacts of the contacts made by both levers close the circuit, supplying current of one direction or another to the electric motor 30, connected with wires 18, 19 to the terminals 29 of the current source, at which the current passes in series or through contacts 6a, 7a, 6b, 1b, or through the contacts bg, Tc, 6d, Id.

In FIGS. 3 and 4, the arrow 1 of the measuring device 2 also has at its end a plate 3 moving over a trough-shaped lining 20. Above the plate 3 of a row there are two spaced levers 21a separated from one another and, pivoted on the axis 22, and illuminated by means of hooks 23 on the lever 24, provided with contacts 2ba, 25b, 26c and 26d, located opposite the contacts 27a, 276, 27c and 27flf, placed on the levers 21a and 21).

The lever 24 is driven by some device in an oscillating motion around the axis 26 and when the lever 24 moves downwards, the levers 21a and 215 also move downwards due to their weight, and if the plate 3 of the arrow 1 is currently under the falling lever 11th, provided with contacts 27, 27b, the plate 3 delays its movement, as a result of which the contacts 26a, 26b are pressed against the contacts 27a, 275. At this time, the lever 215 does not connect the contacts 26c and 26d with the contacts 27c and 27, and the lever itself falls into trough-shaped groove odkladki 20, with what movement; it is calculated in such a way that the distance between the contacts 26c, 26d and 27c, 27d in this case does not change. If, while moving down the levers 24, 21 and 215, the arrow 1 is just in the interval between the auxiliary levers 21 and 215, then the contact does not close anywhere. If the arrow 1 is set under the lever 215, then the contacts 26c, 27c, 26d, 27d are closed, and the contacts 26a, 27y and 265, 275 remain open.

To pins 27a, 275 and 27c, 27d are adventurous, using wires 31 and 32,

solenoids 33 and 34, the cores of which 35 and 36, provided with toothed rails 37, 38, can longitudinally move, while the toothed rails 37 and 38 are coupled with one common toothed wheel 39 associated with the drive mechanism. When the contacts 26, 27a and 265, 276 are closed, the current passes through the wires 31 and excites the solenoid 33, the core of which engages, causing the gear wheel 39 to rotate in a counterclockwise direction. When the contacts 26c, 27c and 26d, 27d are closed, the core 36 is retracted into the solenoid 34, and the gear wheel 39 rotates in the opposite direction. By appropriately switching the wires, the gear wheel 39 can be made, if desired, to rotate in the same direction, regardless of which of the solenoids 33, 34 is flowing.

The subject of the patent.

1. Device for controlling an electromagnetic drive machine with the aid of an arrow of a measuring device, characterized in that it consists of two levers 8y, 85 rotating on an axis 9, which can move in one direction under the action of a spring or its own weight, and in the other under the action of lever transmission 10-12-12, driven by an electromagnet 15, and intended at the moment of the arrow 1 of the measuring device 2 deviating to one side or the other from the middle position, contact 6a-6b-7a-75 or contacts bs-6d-7c-74 and by that In order to supply current of one direction or another from the auxiliary current source 29 to the electric motor 30, for which purpose an arrow 1 is located between the levers 8a, 85 and the indicated contacts, moving the lever that is at a certain moment opposite to it (Fig. 1 and 2) .

2. Alteration of the device described in paragraph 1, characterized in that the levers 21a, 215 are provided at the ends with contacts 27a, 275, 27s, 27d and hung on the hooks 23 of the lever 24, rotated, equipped with contacts 2b, 265, 2bs , 26d, connected to an auxiliary current source, and intended at the moment of the shooter's deviation from its average position and eliminating the delay effect on one of the levers 21a.

21 & through the contacts of this lever, close the circuit of one of the solenoids 33, 34, acting with their cores 35-36 pivotally on the gear 38, which is connected with the drive mechanism.

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